JP2018134584A - Transfer type slurry manufacturing apparatus, land fille facility of water level land fille site and land fille method of water level land fille site - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer type slurry manufacturing apparatus which can use any of dry ash, wet ash and clinker ash as raw material of coal ash slurry, and can be easily disassembled and can be transferred in a short time even after being installed.SOLUTION: A transfer type slurry manufacturing apparatus 1 includes at least a support base 2 laid on the ground, an agitation device 4 which produces slurry by using coal ash including at least one of dry ash, wet ash and clinker ash as raw material and a support frame 3 which supports the agitation device 4. Therein, the support frame 3 and the support base 2 are configured such that fastening and release of the fastening are freely selected, and can be divided into two or more assemblies.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transfer type slurry manufacturing apparatus, a landfill facility for a water surface landfill site, and a landfill method for a water surface landfill site.

  Of the coal ash and gypsum powder produced from coal-fired power plants and blast furnace slag powder produced from blast furnaces (hereinafter referred to as “coal ash etc.”) Landfilled. Here, the final landfill site includes an onshore landfill site and a water surface landfill site, and the water surface landfill site has a volume of about 800 m in length, 1,000 m in width and about 10 m in depth (in FIG. 16). (See reference numeral 60). In addition, the final disposal methods include wet ash landfilling in which coal ash is humidified and then dumped with a dump bulldozer, etc., and slurry landfilling in which coal ash etc. and water are mixed to form a slurry and then landfilled. It is divided roughly into.

  Patent Document 1 is known as a slurry landfill method used in a water surface landfill site. Patent Document 1 discloses a method in which a coal ash slurry produced by a slurry production apparatus is sent to a slurry transport pipe by a slurry pump and then discharged toward a water bottom at a predetermined position in a landfill disposal site. Moreover, as a slurry production apparatus, a silo that stores coal ash, an ash metering feeder that continuously supplies a certain amount (for example, 500 t) of ash taken out from the silo, and water and ash are mixed to form a slurry. The structure of the slurry manufacturing apparatus provided with the ash-water mixer which performs is disclosed.

JP 2001-254339 A

By the way, a water surface landfill site is usually constructed adjacent to a coal-fired power plant. However, since coal ash, etc., which is the raw material for the coal ash slurry, may be transported by ships from coal-fired power plants, etc. in various places, the slurry production equipment is located in the coastal area where ships can be moored at the surface landfill site It is preferable to be constructed in the vicinity.
In addition, the conventional slurry production equipment requires high processing capacity to produce a large amount of coal ash slurry, and also requires a backup at the time of failure, so a large-sized material (water, cement, ash) is stored. A silo (storage facility), a weighing unit that measures each batch of material using a load cell, etc., and a plurality of kneading devices such as a spiral pin mixer and a flow jet mixer that knead the weighed materials. It was necessary to prepare. For this reason, the conventional slurry manufacturing apparatus had to be a large facility.
Thus, since the conventional slurry manufacturing apparatus has a large equipment scale and weight, a solid foundation is required. Therefore, the conventional slurry manufacturing apparatus has a limited installation place and is difficult to disassemble and transfer after installation.

Further, in a vast water surface landfill site, in order to landfill a place away from the slurry production apparatus, it was necessary to extend the slurry transport pipe and supply coal ash slurry. At this time, from the viewpoint of preventing clogging in the slurry transport pipe, strict quality control was necessary to produce a uniform coal ash slurry. Moreover, when the silo is used as a storage facility, wet ash and clinker cannot be stored because of poor fluidity.
Therefore, in the conventional slurry manufacturing apparatus, it was the actual condition that only dry ash was used as a raw material for the coal ash slurry, avoiding the use of wet ash and clinker.

  Further, in the landfill of the conventional water surface landfill site, the pumping capacity of the slurry pump is limited, and therefore it is impossible to slurry the entire water surface landfill site by extending the slurry transport pipe. Therefore, it is necessary to give up wet ash and clinker as slurries, and to make wet ash landfill (low density), or a new slurry production device is required. The actual situation is that new measures are required to increase the cost of landfill.

  The present invention has been made in view of the above circumstances, and any of dry ash, wet ash and clinker ash can be used as a raw material for coal ash slurry, and can be easily disassembled even after installation. An object of the present invention is to provide a transfer type slurry manufacturing apparatus that can be transferred in a short time.

  Another object of the present invention is to provide a landfill facility for a water surface landfill site and a landfill method for a water surface landfill site capable of high-density slurry landfill at all landfill points of a large water surface landfill site. To do.

In order to solve the above problems, the present invention employs the following configuration.
That is, the transfer type slurry manufacturing apparatus according to the present invention includes a support base laid on the ground, and a stirring device that generates slurry using coal ash containing at least one of dry ash, wet ash, and clinker ash as a raw material. A support frame that supports the agitation device, and the support frame and the support base can be freely selected from fixing and releasing the fixing, and can be divided into two or more assemblies.

  In the transfer type slurry manufacturing apparatus configured as described above, the support base and the support frame can be freely fixed and released, and can be divided into two or more aggregates. Can be dismantled and relocated even after Moreover, in the transfer type slurry manufacturing apparatus which concerns on this invention, all of dry ash, wet ash, and clinker ash can be used as a raw material of coal ash slurry.

  In the transfer type slurry manufacturing apparatus according to the present invention, the stirring device may be a vertical mixer, a horizontal mixer, or an inclined mixer.

  In the transfer type slurry manufacturing apparatus configured as described above, a wide range of stirring apparatuses capable of generating coal ash slurry using coal ash containing at least one of dry ash, wet ash, and clinker ash as a raw material. Can do.

  Moreover, in the transfer type slurry manufacturing apparatus which concerns on this invention, one or both of the said support base and the said support frame may be comprised from the some member.

  In the transfer type slurry manufacturing apparatus configured as described above, the expandability and the degree of freedom of the layout can be enhanced while maintaining the division property into two or more aggregates.

  Moreover, the transfer type slurry manufacturing apparatus which concerns on this invention may be provided detachably, and may further be provided with the raw material conveyance equipment which conveys the said coal ash to the said stirring apparatus.

  In the transfer type slurry manufacturing apparatus comprised in this way, conveyance to the stirring apparatus of the coal ash which is a raw material can be automated.

  Moreover, the transfer type slurry manufacturing apparatus which concerns on this invention may further be equipped with the raw material input equipment provided detachably.

  In the transfer type slurry manufacturing apparatus configured as described above, the quantitative supply of coal ash as a raw material can be easily performed.

Moreover, in the transfer type slurry manufacturing apparatus which concerns on this invention, it is preferable that a maximum contact pressure is 0.5 kgf / cm < ² > or less.

  In the transfer type slurry manufacturing apparatus configured as described above, the ground can be installed without providing a foundation such as a pile or a concrete board as long as the ground can accommodate a wetland bulldozer, even if the ground is not hard and stable. be able to. Therefore, the installation location of the transfer type slurry manufacturing apparatus of the present invention is not limited to the location that was land before the start of landfill processing, but the location that was the water surface of the water surface landfill disposal site, that is, the landfill processing is completed. This also includes new land areas.

  Further, the landfill facility of the water surface landfill site according to the present invention is a landfill facility for reclaiming coal ash slurry at an arbitrary landfill point of the water surface landfill site, and is provided on land adjacent to the water surface landfill site. A slurry supply source for producing a slurry of coal ash, a horizontal transfer path connected to the slurry supply source and extending to the landfill point, and the slurry transferred by the horizontal transfer path at the landfill point A connecting portion that changes the transfer direction to a vertical direction; a base end side connected to the connecting portion; and a vertical conveyance path that transfers the slurry transferred from the connecting portion toward the bottom of the water. The transfer type slurry manufacturing apparatus mentioned above is used as a source.

  In the landfill facility of the water surface landfill site constructed in this way, it can be moved to any position of the landfill landfill and a transfer type slurry manufacturing apparatus that can be moved to any position on the land adjacent to the water surface landfill site. Since the horizontal conveyance path, the connecting portion, and the vertical conveyance path are combined, high-density slurry landfill is possible at all landfill points in a vast water surface landfill site.

  In the landfill facility of the water surface landfill site according to the present invention, the land may include a place where the landfill of the water surface landfill site is completed.

  In the landfill facility of the water surface landfill site constructed in this way, the transfer type slurry manufacturing equipment can be installed at the place where the landfill of the water surface landfill site close to the water surface is completed, so it is more efficient. Slurry landfill can be performed.

  Moreover, in the landfill facility of the water surface landfill disposal site according to the present invention, it is preferable that at least a part of the connecting portion is exposed on the water surface.

  In the landfill facility of the water surface landfill disposal site configured in this way, even when the horizontal conveyance path and the vertical conveyance path are coupled by an indirect connection method, water can be prevented from entering the slurry from the coupling portion. .

  Further, in the landfill facility of the water surface landfill disposal site according to the present invention, the plurality of unit type water floats that can float on the water surface of the water surface landfill disposal site, and are connected so as to have flexibility. It is preferable that a water float is provided over the water surface between an arbitrary landfill point of the water surface landfill site and the slurry supply source.

  In the landfill facility of the water surface landfill site configured as described above, a unit-type water float connected is provided across the water surface between any landfill point of the water surface landfill site and the slurry supply source. Therefore, it is possible to walk on the water float to the landfill point.

  Moreover, in the landfill facility of the water surface landfill disposal site according to the present invention, the horizontal conveyance path is configured such that a plurality of piping units are connected so that the piping unit is connected to the water float. Each is preferably fixed.

  In the landfill facility of the water surface landfill site constructed in this way, a basic unit of the same shape with the piping unit fixed to the surface float is used, so even if the landfill point is far from the slurry supply source, there are multiple basic units. By connecting, coal ash slurry can be supplied to any landfill point. In addition, by making the units of the same shape, it is possible to reduce manufacturing costs such as design costs and material procurement costs, and a cost reduction effect can be obtained.

  Further, the landfill method of the water surface landfill site according to the present invention is a landfill method in which slurry of coal ash is landfilled at an arbitrary landfill point of the water surface landfill site, and the land adjacent to the water surface landfill site is used as the installation location. A step of installing the transfer type slurry manufacturing apparatus according to any one of claims 1 to 7, a step of operating the transfer type slurry manufacturing apparatus to generate a slurry of coal ash, and the transfer type slurry A step of conveying the slurry from a manufacturing device to an arbitrary landfill point of the water surface landfill site, discharging the slurry at the landfill point and performing landfill, and after the landfill of the landfill point is completed, the relocation Moving the landfill point within a range in which the slurry can be conveyed from the mold slurry manufacturing apparatus, and performing landfill of a new landfill point, from the transfer type slurry manufacturing apparatus After the landfill site within the range where the rally can be transported is completed, the operation of the transfer type slurry manufacturing apparatus is stopped, the transfer type slurry manufacturing apparatus is divided into two or more aggregates, and the installation The said transfer type slurry manufacturing apparatus is moved by making the said land different from a place into a new installation place.

  In the landfill method of the water surface landfill site constructed as described above, high-density slurry landfill is possible at all landfill points of the vast water surface landfill site.

  Moreover, it is preferable that the landfill method of the water surface landfill site according to the present invention includes a place where the landfill of the water surface landfill site is completed.

  In the landfill method of the water surface landfill disposal site configured as described above, the transfer type slurry manufacturing apparatus can be installed at a place where the landfill of the water surface landfill disposal site, which is closer to the water surface, is completed. Slurry landfill can be performed.

  Moreover, it is preferable that the landfill method of the water surface landfill disposal site according to the present invention controls the flow velocity of the slurry in the step of discharging the slurry at the landfill point and performing landfill.

  In the landfill method of the water surface landfill site constructed in this way, the coal ash slurry enters a state of free fall and enters the slurry surface of the seabed (existing landfill part), over the slurry surface and mixed with seawater. Can be prevented. Accordingly, high-density slurry landfill is possible, and the water surface landfill site can be used effectively.

  According to the present invention, any of dry ash, wet ash and clinker ash can be used as a raw material for coal ash slurry, and even after being installed once, it can be easily disassembled and transferred in a short time. A possible transfer type slurry production apparatus can be provided.

  In addition, according to the present invention, it is possible to provide a landfill facility for a water surface landfill site and a landfill method for a water surface landfill site capable of high-density slurry landfill at all landfill points in a large water surface landfill site. it can.

It is a perspective view which shows the structure of the transfer type slurry manufacturing apparatus which is one Embodiment to which this invention is applied. It is a side view which shows the structure of the transfer type slurry manufacturing apparatus which is one Embodiment to which this invention is applied. It is an enlarged view of the machine level adjuster part provided in the slurry manufacturing apparatus. It is a side view at the time of dividing | segmenting the slurry manufacturing apparatus which is one Embodiment to which this invention is applied into a unit (aggregate). It is a side view which shows typically the structure of the landfill equipment of the water surface landfill disposal site which is one Embodiment to which this invention is applied. It is a side view which shows the structure of the connection part which uses a slurry receiving hopper. It is drawing for demonstrating the landfill method of a water surface landfill disposal site, Comprising: (A) The state at the beginning of landfill, (B) The state when landfill progressed, respectively. It is a side view which shows the structure of a lifting apparatus. It is a side view which shows the structure of the discharge pipe of a double pipe structure. It is a figure which shows the structure which connects two connection parts by a bypass pipe. It is a top view for demonstrating the landfill method of the water surface landfill disposal site which is one Embodiment to which this invention is applied. It is a top view for demonstrating the landfill method of the water surface landfill disposal site which is one Embodiment to which this invention is applied. It is a side view which shows typically the structure of the landfill installation of the water surface landfill disposal site which is other embodiment to which this invention is applied. It is a top view which shows typically the structure of the landfill installation of the water surface landfill disposal site which is other embodiment to which this invention is applied. It is a top view which shows the structure of the unit type water float used for the landfill equipment of the water surface landfill disposal site which is other embodiment to which this invention is applied. It is a top view for demonstrating the reclamation method of the conventional water surface landfill disposal site.

  Hereinafter, the configuration of a transfer type slurry manufacturing apparatus which is an embodiment to which the present invention is applied will be described in detail with reference to the drawings together with a landfill facility and a landfill method for a water surface landfill disposal site using the apparatus. In addition, in the drawings used in the following description, in order to make the features easy to understand, there are cases where the portions that become the features are enlarged for the sake of convenience, and the dimensional ratios of the respective components are not always the same as the actual ones. Absent.

<Transfer type slurry manufacturing equipment>
First, a transfer type slurry manufacturing apparatus (hereinafter simply referred to as “slurry manufacturing apparatus”) 1 as an embodiment to which the present invention is applied will be described. FIG. 1 is a perspective view showing a configuration of a slurry production apparatus 1 which is an embodiment to which the present invention is applied. Moreover, FIG. 2 is a side view which shows the structure of the slurry manufacturing apparatus 1 which is one Embodiment to which this invention is applied.
As shown in FIG.1 and FIG.2, the slurry manufacturing apparatus 1 of this embodiment is equipped with the support base 2, the support flame | frame 3, and the high-speed kneading mixer (stirring apparatus) 4 as main equipment, As arbitrary equipment, A belt conveyor (raw material conveying facility) 5, a material receiving hopper (raw material charging facility) 6, a slurry hopper 7, and steps 8 (8A, 8B) are schematically configured.

  The slurry production apparatus 1 of this embodiment is an apparatus for producing a coal ash slurry used for landfill of a water surface landfill site using coal ash containing at least one of dry ash, wet ash, and clinker ash as a raw material. .

  Coal ash used as a raw material is generally classified into fly ash and clinker ash. In this specification, fly ash refers to mechanical dust collectors such as electric dust collectors, cyclones, and bag filters installed in flues (hereinafter simply referred to as “coal ash” discharged from coal-fired power plants). Coal ash captured by the “collector” is shown. Clinker ash is coal ash discharged from a coal-fired power plant and fixed to and discharged from the bottom or wall of the furnace, and indicates sand or lime.

  Moreover, the fly ash mentioned above is further classified into dry ash and wet ash. In the present specification, dry ash refers to the fly ash described above, which is discharged from the dust collector and does not absorb moisture. In addition, wet ash refers to coal ash (fly ash) that has been added to dry ash for transportation on a gut ship (a ship without a closed cargo hold) or a dump truck, or fly ash that has been piled in contact with rainwater, etc. It shows coal ash (fly ash) in a wet state. In addition, wet ash is in the state which has the range of about 15-30 mass% normally with a moisture content.

  The support base 2 is a component of the slurry manufacturing apparatus 1 of the present embodiment (the support frame 3, the high-speed kneading mixer 4, the belt conveyor 5, the material receiving hopper 6, the slurry hopper 7, and the staircase 8) directly or the support frame. 3 is a foundation provided to support indirectly through 3. Specifically, as the support base 2, as shown in FIG. 1, a laid iron plate laid on the ground can be used. The magnitude | size of the support base 2 is not specifically limited, According to the magnitude | size of the slurry manufacturing apparatus 1, it can select suitably. Specifically, for example, the width can be about 6.0 to 7.5 m, and the length can be about 16.5 to 17.1 m. In addition, the thickness of the support base 2 can be appropriately selected according to the total amount of the constituent members of the slurry manufacturing apparatus 1 so as not to warp or deform. Specifically, for example, it can be about 2.2 to 2.5 cm.

As shown in FIG. 2, the support base 2 is composed of a plurality of support base members (laying iron plates) 2 </ b> A and 2 </ b> B from the viewpoint of ease of transport when the slurry manufacturing apparatus 1 is disassembled and transferred. The support base members 2A and 2B may be independent members, or the members may be connected (fastened) to each other so as to be able to freely select between fixing and releasing the fixing.
In addition, since the slurry manufacturing apparatus 1 of this embodiment is lightweight, it is not necessary to use a fixed foundation like a pile or a concrete board. Therefore, it is easy to carry when the slurry manufacturing apparatus 1 is disassembled and moved.

  As shown in FIGS. 1 and 3, a plurality (8 in the present embodiment) of machine level adjusters 9 are provided on the support base 2. The support base 2 and the support frame 3 are fixed in a state where they are connected via a machine level adjuster 9.

As shown in FIG. 3, the machine level adjuster 9 includes a level adjusting base plate 9A made of H-shaped steel and an adjusting bolt 9B. By providing the machine level adjuster 9, it is possible to prevent displacement when the support frame 3 is connected to the support base 2. Further, the level adjustment of the mechanical equipment can be easily performed in mm units by the adjusting bolt 9B.
Note that the support base 2 and the support frame 3 are not completely fixed by welding or the like, but can be selected to be fixed or released by, for example, fastening with bolts.

  As shown in FIGS. 1 and 2, the support frame 3 is provided to support (fix) the constituent members (for example, the high-speed kneading mixer 3) of the slurry manufacturing apparatus 1 at a predetermined position (height). It is a frame (framework). As the support frame 3, for example, H-shaped steel can be used.

  As shown in FIG. 2, the support frame 3 includes a plurality of support frame portions 3 </ b> A to 3 </ b> D from the viewpoint of ease of transportation when the slurry manufacturing apparatus 1 is disassembled and moved. Moreover, the structure of each support frame part 3A-3D is not specifically limited, According to required shape, intensity | strength, etc., it can select suitably.

  Specifically, the support frame portions 3A to 3D are made of H-shaped steel and have a basic structure in which four are arranged in a vertical direction as pillars, and four are arranged on a pillar in a parallel direction to form a girder. . In addition, there is a strut that crosses the H-shaped steel diagonally between the column and the girder as necessary.

  In addition, support frame part 3A-3D may be an independent member, respectively, and support frame parts may be connected (fastened) freely, selection of fixation and cancellation | release of fixation may be carried out freely. Moreover, the connection method of support frame parts is not specifically limited, For example, the method of fixing H-shaped steels with a volt | bolt can be used.

  As shown in FIGS. 1 and 2, the support frame 3 is provided with a plurality of working floors (scaffolds) 10 (three in this embodiment). Further, by detachably hanging the stairs 8 (8A, 8B) between the work floor 10 and the support base 2, an operator can be placed on the work floor 10 provided at a position higher than the ground. can go. Thereby, workability | operativity, such as confirmation of a driving | running state, can be improved. The work floor 10 is preferably provided with a safety fence 11.

  The high-speed kneading mixer 4 is a stirrer that generates a slurry by kneading coal ash, which is any one of dry ash, wet ash, and clinker ash, or a combination of two or more, and water. Specifically, as the high-speed kneading mixer 4, a vertical mixer such as an HF mixer (manufactured by Taihei Kiko Co., Ltd.) can be used. The high-speed kneading mixer 4 is not limited to a vertical mixer, and may be a horizontal mixer or a mixer that is inclined so that the rotation axis is between the vertical direction and the horizontal direction. . Moreover, the high-speed kneading mixer 4 may have a function of adjusting the mixing ratio of coal ash and water to an appropriate range.

The capacity of the high-speed kneading mixer 4 is not particularly limited, and can be appropriately selected from the amount of slurry to be generated. Specifically, for example, it can be set to about 0.5 to 2.0 m ³ .

  The high speed kneading mixer 4 is provided at a position relatively above the ground in order to provide a space for installing the slurry hopper 7 below the high speed kneading mixer 4. Specifically, the high-speed kneading mixer 4 is supported by the support frame portion 3B so that the input side of the coal ash that is the raw material is upward and the discharge side of the generated slurry is downward. Further, the support frame portion 3B is provided on the support frame portion 3A so that the high-speed kneading mixer 4 is located above the slurry hopper 7.

  A raw material charging guide mechanism 12 and a water supply mechanism 13 are provided above the high-speed kneading mixer 4.

  The high-speed kneading mixer 4 is preferably capable of high-speed stirring in order to increase the productivity of coal ash slurry production. The range of the high-speed stirring is not particularly limited, but in the case of a vertical mixer, for example, the rotation speed is preferably 130 rpm or more by inverter control or the like, more preferably 140 rpm or more, More preferably, the rotation speed is 150 rpm or more. In this case, in batch-type slurry production, the slurry can be formed with a mixing time of 30 seconds or less, more preferably 15 seconds or less.

  The belt conveyor 5 is a raw material provided at the inlet of the high-speed agitating mixer 4 when the raw coal ash and clinker ash are mainly used as raw materials. It is a transport facility for transporting to the charging guide mechanism 12. The belt conveyor 5 is detachably supported across the support frame portions 3B and 3C in an inclined state so that the raw material charging guide mechanism 12 side becomes higher.

  Use of the belt conveyor 5 eliminates the need for the operator to carry the raw material to the input port of the high-speed kneading mixer 4, thereby improving the work efficiency. Further, when the raw material is transported to the raw material input guide mechanism 12 by the belt conveyor 5, the input amount of the raw material can be measured by measuring the operation time. Thereby, since the ash fixed quantity supply machine provided in the conventional slurry manufacturing apparatus becomes unnecessary, the slurry manufacturing apparatus 1 can be reduced in size.

  The material receiving hopper 6 inputs the raw materials provided for loading these raw materials on the belt conveyor 5 when the raw coal ash and clinker ash are used as raw materials. Equipment. The material receiving hopper 6 is supported by the support frame portion 3D. Further, the support frame portion 3D is provided on the support frame portion 3C so that the material receiving hopper 6 is located above the loading surface of the belt conveyor 5.

By providing the material receiving hopper 6 in this way, the raw material charged by using a heavy machine such as a backhoe or an excavator car is stored from the opening provided above the material receiving hopper 6, and downward. The raw material can be dropped onto the loading surface of the belt conveyor 5 from the provided opening.
In addition, the thickness of the coal ash loaded on the belt conveyor 5 can be made uniform by providing, for example, a scraped plate-like member between the belt conveyor 5 and the material receiving hopper 6. In this way, by keeping the cross-sectional area (thickness) of the coal ash loaded on the belt conveyor 5 constant, the amount of coal ash charged into the high-speed kneading mixer 4 is accurately controlled by the operating time of the belt conveyor 5. It becomes possible to do.

  The slurry hopper 7 is a facility for temporarily storing the coal ash slurry produced by the high-speed kneading mixer 4. The slurry hopper 7 is supported by the support frame portion 3A. Further, a pipe L <b> 1 for deriving the coal ash slurry is connected to the lower portion of the slurry hopper 7 so that the coal ash slurry can be supplied to the secondary side of the slurry production apparatus 1. By providing the slurry hopper 7, the coal ash slurry can be stably supplied from the slurry production apparatus 1.

  The stairs 8 (8A, 8B) are stretched between the support base 2 and the support frame 3 in order to climb the work floor 10 provided on the support frame 3. Specifically, the staircase 8A is provided between the support base member 2B and the support frame portion 3D. The staircase 8B is provided between the support base member 2A and the support frame portion 3B. Thereby, an operator can safely go on the work floor 10 provided at a position higher than the ground. The staircase 8 is detachably fixed to the support base 2 and the support frame 3 by fastening with bolts, for example. Thereby, when disassembling the slurry manufacturing apparatus 1, it can remove freely.

Slurry manufacturing apparatus 1 of the present embodiment is maximum contact pressure of 0.5 kgf / cm ² or less, preferably 0.43kgf / cm ² or less, more preferably 0.22kgf / cm ² or less More preferably, it is 0.1 kgf / cm ² or less. If the maximum ground pressure of the slurry production apparatus 1 is 0.5 kgf / cm ² or less, the slurry production apparatus 1 can be installed as long as the ground can be filled with a wetland bulldozer even if the ground is not hard and stable. . Therefore, the installation location when installing the slurry manufacturing apparatus 1 of the present embodiment is not limited to the location that was land before the start of landfill processing, but the location that was the water surface of the landfill disposal site, that is, landfill When processing is completed, it can be installed in a new land area.

Thus, by installing the slurry production apparatus 1 in a place close to the landfill point of the water surface landfill disposal site, the coal ash slurry can be obtained without increasing the supply capacity of the slurry pump and without extending the slurry transport pipe. Can be supplied stably. In addition, since the slurry transport pipe can be shortened, the risk of clogging the coal ash slurry in the slurry transport pipe can be reduced.
In addition, the slurry manufacturing apparatus 1 of the present embodiment has been sufficiently studied for reduction in size and weight, and actually achieves a maximum ground pressure of less than 0.2 kgf / cm ² (0.194 kgf / cm ² ). Can do.

  The slurry manufacturing apparatus 1 according to the present embodiment has an arbitrary connection portion between the support base 2, the support frame 3, the high-speed kneading mixer 4, the belt conveyor 5, the material receiving hopper 6, the slurry hopper 7, and the staircase 8. It can be unlocked at a point. Furthermore, about the support base 2 and the support frame 3, about the connection part of each member, fixation can be cancelled | released in arbitrary places. The fixation can be released by, for example, loosening the bolt at the fastening portion. Thereby, the slurry manufacturing apparatus 1 of this embodiment can be divided into two or more arbitrary units (aggregates).

  The slurry manufacturing apparatus 1 can be divided into two or more units. Here, each unit is an arbitrary combination selected from the support base members 2A and 2B, the frame members 3A to 3D, the stirring device 4, the belt conveyor 5, the material receiving hopper 6, the slurry hopper 7, and the steps 8A and 8B. It can be.

  The slurry manufacturing apparatus 1 can be divided into, for example, eight units 1A to 1H. Specifically, as shown in FIG. 4, the unit 1 </ b> A is schematically configured to include a support base member 2 </ b> A, a support frame portion 3 </ b> A, and a slurry hopper 7. The unit 1 </ b> B is schematically configured to include a support frame portion 3 </ b> B, a stirring device 4, and a water supply mechanism 13. Further, the unit 1 </ b> C is roughly configured to include a raw material charging guide mechanism 12. The unit 1D is schematically configured to include a support base member 2B and a support frame portion 3C. The unit 1E is schematically configured to include a support frame portion 3D and a material receiving hopper 6. The unit 1F is composed of a belt conveyor 5. The unit 1G is composed of a staircase 8A. The unit 1H is composed of stairs 8B.

  In addition, the unit division number of the slurry manufacturing apparatus 1 is an example, and is not limited to this. For example, the number of units less than 8 may be obtained by keeping the steps 8A and 8b attached to the support base members 2A and 2B. Further, the support base members 2A and 2B and the support frame portions 3A and 3C may be separated so that the number of units exceeds eight. Furthermore, the position of unit division of the slurry manufacturing apparatus 1 is an example, and is not limited to this. Furthermore, the division positions for forming the members of the support base 2 and the support frame 3 are merely examples, and the present invention is not limited thereto.

  By the way, the conventional slurry manufacturing apparatus is a large-sized construction equipped with a plurality of kneading devices such as a material storage facility, a load cell, etc., a large silo, a measuring device such as a load cell, and a spiral pin mixer / flow jet mixer for kneading materials. It was a thing. Therefore, it has been difficult to disassemble and transfer the conventional slurry manufacturing apparatus after installation.

  On the other hand, since the slurry manufacturing apparatus 1 of this embodiment can be decomposed into two or more units, it can be disassembled into units and transferred to another place even after being installed once. . Therefore, the slurry manufacturing apparatus 1 of the present embodiment moves the slurry manufacturing apparatus 1 to the next landfill point without further increasing the supply capacity of the slurry pump and without further extending the slurry transport pipe. The coal ash slurry can be stably supplied. In addition, since the slurry transport pipe can be shortened, the risk of clogging the coal ash slurry in the slurry transport pipe can be reduced.

<Method for producing coal ash slurry>
Next, a method for producing a coal ash slurry using the slurry production apparatus 1 of the present embodiment will be described as an example in which wet ash and clinker ash are used as raw materials.
The slurry manufacturing apparatus 1 of this embodiment can use wet ash and clinker ash as raw materials for the coal ash slurry. Unlike dry ash, large-sized silos are not required for storage of raw materials.

  First, wet ash and clinker ash as raw materials are put into the material receiving hopper 6. Specifically, for example, wet ash and clinker ash stacked on the backhoe, excavator car, etc. are transported. Next, a certain amount of raw material is supplied from the material receiving hopper 6 to the loading surface of the belt conveyor 5.

  Next, by operating the belt conveyor 5, the loaded raw materials are transported to the raw material charging guide mechanism 12 provided at the charging port of the raw material kneading mixer 4, and a predetermined amount of raw materials are supplied to the high speed kneading mixer 4. In addition, since the slurry manufacturing apparatus 1 of this embodiment is not provided with the measuring apparatus, it can measure the input amount of a raw material by measuring the operation time of the belt conveyor 5 at the time of conveying a raw material. Next, water is supplied from the water supply mechanism 13 into the high-speed kneading mixer 4. The feed amount of the raw material and water into the high-speed kneading mixer 4 does not need to be strictly controlled, but is calculated by measuring the moisture content of the raw material several times a day and correcting based on the value. It is preferable.

  Next, the high-speed kneading mixer 4 is operated to produce a coal ash slurry. Here, when the high-speed kneading mixer 4 is a vertical mixer, a batch of coal ash slurry can be produced in about 7 to 15 seconds by setting the rotation speed to 130 to 156 rpm by inverter control. The quality of the produced slurry may be in a range where clogging of the coal ash slurry does not occur in the slurry transport pipe, and it is not always necessary to knead until the lumps are removed.

  Next, the produced coal ash slurry is transferred from the high-speed kneading mixer 4 to the slurry hopper 7 and temporarily stored. And according to the request | requirement of the unillustrated landfill apparatus, coal ash slurry is supplied to the secondary side of the slurry manufacturing apparatus 1 from the piping L1 for coal ash slurry derivation | leading-out provided in the lower part of the slurry hopper 7. FIG.

  As explained above, according to the slurry manufacturing apparatus 1 of the present embodiment, the slurry is made from the support base 2 laid on the ground and coal ash containing at least one of dry ash, wet ash and clinker ash as a raw material. At least a support frame 3 that supports the high-speed kneading mixer 4, and the support frame 3 and the support base 2 can be selected between fixing and releasing the fixing, and 2 It can be divided into the above units. That is, since the slurry manufacturing apparatus 1 of the present embodiment can be reduced in size and divided as the minimum required apparatus configuration, it can move according to the landfill location, and can manufacture and landfill the slurry.

Moreover, according to the slurry manufacturing apparatus 1 of this embodiment, since the maximum contact pressure is 0.5 kgf / cm < ² > or less, it can be installed as long as the ground is in a state where work can be performed by the wetland bulldozer. That is, the slurry manufacturing apparatus 1 of the present embodiment can be installed even in a place where the landfill of the water surface landfill has been completed.

  Moreover, according to the slurry manufacturing apparatus 1 of this embodiment, since it can be moved to the place where the landfill has been completed, there is no need to excessively increase the supply capacity of the slurry pump or excessively extend the slurry transport pipe. . Moreover, since there is a low possibility of clogging in the slurry transport pipe, it is not necessary to strictly control the supply amount of coal ash and water when producing the coal ash slurry. Furthermore, since it is not necessary to obtain the presence of some lumps and strict uniformity, the kneading time can be shortened (that is, the slurry production capacity can be improved), so a sufficient amount of coal ash slurry is supplied. can do.

  Moreover, according to the slurry manufacturing apparatus 1 of this embodiment, a coal ash slurry can be produced using coal ash containing at least one of dry ash, wet ash, and clinker ash as a raw material. Thus, since not only dry ash but also wet ash and clinker ash can be slurry landfilled as coal ash slurry, the landfill capacity of the water surface landfill can be effectively utilized.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the slurry manufacturing apparatus 1 according to the above-described embodiment, the configuration including the belt conveyor 5 has been described as an example. However, the configuration is not limited thereto, and the belt manufacturing apparatus 4 is directly connected to the high-speed kneading mixer 4 except for the belt conveyor 5 and the material receiving hopper 6. It is good also as a structure which inputs a raw material. Thereby, a transfer type slurry manufacturing apparatus can be further reduced in size and weight.

  Moreover, although the slurry manufacturing apparatus 1 mentioned above demonstrated as an example the structure which uses wet ash and clinker ash as a raw material, it is not limited to this, It is good also as a structure which uses dry ash, Specifically, a high-speed kneading mixer The structure which provides a coal ash (dry ash) silo above 4 may be sufficient.

<Landfill facilities at water surface landfill site>
Next, a landfill facility (hereinafter simply referred to as “landfill facility”) of a water surface landfill site, which is an embodiment to which the present invention is applied, will be described. FIG. 5 is a diagram schematically showing a configuration of a landfill facility 70 according to an embodiment to which the present invention is applied.
As shown in FIG. 5, the landfill facility 70 of the present embodiment is provided on the land 61 adjacent to the water surface landfill disposal site 60, and generates the coal ash slurry and the above-described slurry manufacturing apparatus (slurry supply source) 1. The transport section (horizontal transport path) 30 connected to the slurry manufacturing apparatus 1 and extending to the landfill point, the connecting section 40, and the discharge section (vertical transport path) 50 are roughly configured. ing.
The landfill facility 70 is an apparatus for landfilling slurry-like coal ash or the like at an arbitrary landfill point of the water surface landfill disposal site 60.

  A pipe L <b> 1 for deriving the coal ash slurry of the slurry manufacturing apparatus 1 is connected to a slurry pump (slurry pumping apparatus) 14. The slurry pump 14 has a discharge pressure necessary for extruding the coal ash slurry from the outlet of the slurry production apparatus 1 to the discharge unit 50. As the slurry pump 14, a general hydraulic piston dual pump, amphibious sand pump, or the like can be used.

  The transport unit 30 is a device for transporting the coal ash slurry supplied from the slurry production apparatus 1 to the connection unit 40, and includes a transport pipe (slurry transport pipe) L2, a float 31, an anchor 32, a wire 33, and a washing water pipe. 34.

  The transport pipe L2 transfers the slurry fed from the slurry manufacturing apparatus 1 to the connecting portion 40A of the connecting portion 40. The length R of the transport pipe L2 is not particularly limited, but can be set to 100 to 200 m, and preferably 50 to 100 m. Incidentally, some of the water surface landfill disposal sites 60 have an area of about 800 m × 1,000 m, but in the landfill facility 70 of the present embodiment, the length of the transport pipe L2 may be about 100 m.

  The cross-sectional size of the transport pipe L2 is determined in consideration of the pressure loss of the pipe determined by the slurry supply amount, the length of the transport pipe L2, and the like, but is generally about 150A (pipe outer diameter 150 mm). A pipe having a flexible structure such as a steel pipe or a flexible resin pipe or a corrugated pipe can be used. By adopting a flexible material or structure, it is possible to prevent the transport pipe L2 from breaking even when the transport pipe L2 is rocked by waves.

  The float 31 is connected to the transport pipe L2 to float the transport pipe L2 from the water bottom 62. By the way, when a fixed discharge part is provided in the water surface landfill disposal site, there is a problem that it takes time and cost to remove the fixed discharge part after the completion of landfill in a predetermined place. On the other hand, by connecting the float 31 to the transport pipe L2 and floating the transport pipe L2 from the bottom 62, the resistance at the time of movement of the transport pipe L2 is reduced, and the connecting part connected to the tip of the transport part 30 40 and the discharge part 50 can be easily moved to arbitrary positions in the water surface landfill site 60.

  The anchor 32 and the wire 33 connect between the water bottom 62 and the float 31 or the transport pipe L <b> 2, so that the transport pipe L <b> 2 can be moored at a certain position on the water surface 63. When moving the landfill point, for example, when a steel anchor is used, the transport pipe L2 can be easily moved by lifting the anchor 32 from the water bottom 62. On the other hand, the material of the anchor 32 is generally steel or concrete. However, when steel or concrete cannot be used due to the regulations of the water surface landfill disposal method, coal ash is the same material as the landfill material of the water surface landfill site. In the case of using the anchor 32 put in a biodegradable flexible container bag, etc., the wire 33 connected to the anchor 32 may be removed and only the transport pipe L2 and the wire 33 may be moved while leaving the anchor 32 left.

  The connection part 40 is an apparatus for changing the transfer direction of the coal ash slurry that has been transferred in the substantially horizontal direction by the transport part 30 to the substantially vertical direction. The connection part 40A, the float 41, the lifting device (lifting means) 42, It has an anchor 43 and a wire 44.

  The connecting part 40A connects the transport pipe L2 and the discharge pipe L3, changes the transfer direction of the slurry that has been transferred in the substantially horizontal direction by the transport part 30 to the substantially vertical direction, and transfers the slurry to the discharge pipe L3. Transport. The connecting portion 40A shown in FIG. 1 is indicated by a simple arc, but the transfer direction of the coal ash slurry that has entered the slurry inlet of the connecting portion 40 in the horizontal direction is the vertical direction at the slurry outlet of the connecting portion 40. If it has changed, the form in the middle of 40 A of connection parts will not ask | require. For example, even if the connecting portion 40A changes the transfer direction of the coal ash slurry from the horizontal direction to the vertical direction, then changes the horizontal direction again and then changes the vertical direction, the slurry of the connecting portion 40 The transfer direction of the coal ash slurry at the outlet may be changed to the vertical direction.

  As shown in FIG. 6, the connection portion 40A has a method (hereinafter referred to as “direct connection method”) in which the transport pipe L2 and the discharge pipe L3 are directly connected by an elbow pipe, an L-shaped tube, a T-shaped tube, or the like. In addition, the transport pipe L2 and the discharge pipe L3 are connected via a space by the slurry receiving hopper 401 or the like, and the transport pipe L2 and the discharge pipe L3 are not directly connected (hereinafter referred to as “indirect connection system”). There is.

  In the case of employing the indirect connection method, it is possible to prevent water from entering the connecting portion 40 when at least a part of the connecting portion 40 is exposed on the water surface (that is, between the transport pipe L2 and the discharge pipe L3). Since it is possible to prevent water from being mixed into the slurry from the space between them, the structure having the float 41 is generally used. When the above-described slurry receiving hopper 401 is employed as an indirect connection method, there is an effect that the slurry properties and the slurry surface can be visually confirmed. In the direct connection method, it is possible to adopt a configuration in which at least a part of the coupling portion 40 is exposed on the water surface.

  In the case of using the slurry receiving hopper 401 in the indirect connection method, as shown in FIG. 6, the slurry receiving hopper 401 is disposed at the upper part of the discharge pipe L3, and the base end of the discharge pipe L3 is provided at the reduced diameter portion of the slurry receiving hopper 401. 52 is connected. Above the enlarged diameter portion of the slurry receiving hopper 401, an opening of the transport pipe L2 is provided, and the coal ash slurry to be transferred can be collected. Although it does not specifically limit as a magnitude | size of the diameter expansion part of the slurry receiving hopper 401, Specifically, it can be set as internal dimensions 500 mm x 500 mm etc., for example. The material of the slurry receiving hopper 401 is not particularly limited, and specifically, for example, a steel plate (t = 4.5 mm) or the like can be used.

  When the indirect connection method is adopted, the upstream connecting portion 40, the transporting portion 30, and the slurry supply even when the discharge pipe L3 is clogged by not directly connecting the transport pipe L2 and the discharge pipe L3. The influence on the slurry manufacturing apparatus 1 as a source can be reduced. In the case of this embodiment, the timing when the slurry is buried and the slurry becomes difficult to discharge from the discharge port 51 at the tip of the discharge pipe L3 is confirmed by the increase in the upper surface level of the slurry in the slurry receiving hopper 401. be able to.

  As shown in FIG. 6, the float 41 preferably has a function as a base for attaching the connecting portion 40 and the winding device 421.

  As shown in FIG. 5, since the float 41 has a buoyancy that causes the connecting portion 40 and the discharge portion 50 to float from the bottom 62, the connecting portion 40 and the discharge portion 50 leave the bottom 62, and thus tow on a boat or the like. Thus, the connecting part 40 can move on the water surface 63 of the water surface landfill site 60. Moreover, the anchor 43 and the float 41 placed on the water bottom 62 can be bound by the wire 44, and the connecting portion 40 can be prevented from moving from the landfill position. When moving the landfill point, for example, when using a steel anchor, the connecting portion 40 and the discharging portion 50 can be easily moved by lifting the anchor 43 from the water bottom 62. On the other hand, when using the anchor 43 in which coal ash or the like is put in a biodegradable flexible container bag due to restrictions such as the waste-cleaning method, the wire 44 connected to the anchor 43 is removed, and the anchor 40 is left unattached, Only the discharge part 50 and the wire 44 may be moved.

  The discharge part 50 is a component for transferring the coal ash slurry whose transfer direction has been changed to a substantially vertical direction by the connecting part 40 in a substantially vertical direction and filling it from the water bottom 62, and is a discharge pipe L3 and a discharge port (opening). 51.

  The proximal end 52 of the discharge pipe L3 is connected to the connecting portion 40A, and a discharge port 51 is provided at the distal end 53 of the discharge pipe L3. Further, the discharge port 51 is opened vertically downward.

  As shown in FIG. 7A, the discharge port 51 is disposed opposite to the water bottom 62 at the landfill site at the beginning of landfill. When the landfill is advanced, the discharge port 51 is buried in the coal ash 64 or the like deposited on the water bottom 62 as shown in FIG. By disposing the discharge port 51 so as to face the water bottom 62 or by burying and holding it in the already buried coal ash 64 or the like, it is possible to suppress the diffusion of the coal ash slurry into the water. The landfill density of coal ash can be improved.

  In FIG. 5, in order to maintain the discharge port 51 at a predetermined depth, the length of the discharge pipe L3 is fixed and the connecting portion 40 is moved up and down, and the position of the connecting portion 40 is held and the discharge pipe L3 is There is a method of expanding and contracting the length. In the latter method, when the discharge pipe L3 is expanded and contracted while a part of the connecting portion 40 is floated on the water surface, it is possible for a person to visually confirm the state of the flow of the coal ash slurry at the connecting portion 40. The effect of becoming is obtained.

  In the case of a method in which a part of the connecting portion 40 is held while floating on the water surface, the position of the discharge port 51 is maintained by absorbing the fluctuation of the water surface, and the discharge port 51 is moved up and down depending on the depth of slurry filling Therefore, it is common to use a pipe having an elastic structure such as a corrugated pipe or a flexible resin tube as the discharge pipe L3.

  A double pipe as shown in FIG. 8 can be used as the discharge pipe L3 having a vertically expandable structure. By making the inner tube L3A and the outer tube L3B of the double tube slidable, it is possible to absorb the perturbation of the water surface that occurs during waves and stabilize the altitude position of the discharge port 51. Further, when the discharge port 51 is buried in the landfilled slurry, the embedding depth of the discharge port 51 becomes deep and the slurry discharge amount from the discharge port 51 becomes a predetermined discharge amount or less. For this, the outer tube L3B is gradually lifted upward by the lifting device 42, and the discharge of the slurry is recovered while holding the discharge port 51 at a predetermined depth in the slurry. Even if there is a gap of about 15 mm between the inner pipe L3A and the outer pipe L3B, there is no practical problem such as water trapping or slurry leakage at the time of slurry reclamation, but the inner pipe L3A and the outer pipe It is preferable to make the gap as small as possible as long as there is no hindrance to slide with L3B. Further, it is possible to improve the water shielding property by providing a packing between the inner tube L3A and the outer tube L3B and sliding it. When the discharge port 51 is installed in contact with the water bottom 62, even if a wave or the like occurs, the double pipe expands and contracts and the position variation of the discharge port 51 is reduced. Therefore, the position management of the discharge port 51 is easy. Become.

  The outlet 51 can be provided with a notch or the like. At the initial stage of slurry reclamation, even if the discharge port 51 is brought into contact with the water bottom 62, the slurry is discharged without any trouble due to the unevenness of the bottom of the water, but from the state where the pipe is simply cut, the wedge 51 is cut into the discharge port 51. By providing the notch, the slurry can be discharged more smoothly.

  The lifting device 42 moves the discharge port 51 up and down, and includes a wire 422 and a winding device 421 as shown in FIG.

  The wire 422 is connected to the discharge port 51, and the discharge port 51 is moved up and down by winding or lowering the wire 422 with a winding device 421 installed on a pedestal formed by the float 41.

In the case of a double tube, as shown in FIG. 8, the wire 422 is connected to the outer tube L3B, and the wire 422 is wound or unwound by the winding device 421 installed on the pedestal formed by the float 41. The discharge port 51 connected to the outer tube L3B is moved up and down.
The position of the discharge port 51 during landfill can be changed by the lifting device 42 according to the height difference of the discharge port 51 from the water surface, the thickness of the slurry deposited above the discharge port 51, the concentration of the slurry, and the like. This adjusts the amount of slurry discharged and prevents clogging.

  The lifting device 42 shown in FIGS. 8 and 9 is an example, and the present invention is not limited to this. For example, the outer pipe L3B can be moved up and down in the vertical direction using a hydraulic device or a rack and pinion. In addition, the drive mechanism which winds up the wire 422 in the winding device 421 does not need to be provided in the connecting portion 40. For example, the driving mechanism is installed on land, and the wire 422 is connected via the winding device 421 installed in the connecting portion 40. It is also possible to wind up or down.

  Further, in the embodiment shown in FIG. 8, the outlet 51 is provided in the outer tube L3B and the inner tube L3A is connected to the connecting portion 40, but this is not limitative. The inner pipe L3A may be provided with a discharge port 51, the outer pipe L3B may be connected to the connecting portion 40, and the inner pipe L3A may be connected to the lifting device 42.

  Although the double tube structure has been described here, it may be a multiple tube structure made of three or more cylindrical members having different diameters, such as a triple tube, and capable of expanding and contracting in the axial direction.

  Furthermore, it can be set as the structure provided with the bypass pipe which has two or more connection parts 40 and connects between each connection part. A specific example in the case of the indirect connection method is shown in FIG. 10, but the same configuration can also be adopted in the direct connection method.

  As shown in FIG. 10, by connecting between the plurality of slurry receiving hoppers 401 by the bypass pipe 402, the slurry receiving hopper 401 and the discharge pipe L3 from the slurry receiving hopper 401 on the upper part of the clogged discharge pipe L3. So that the slurry flows. With this configuration, even when one of the discharge pipes L3 is clogged, it is not necessary to stop the slurry manufacturing apparatus 1 that is a slurry supply source, and a predetermined landfill is continued in the other slurry receiving hopper 401 and the discharge pipe L3. be able to.

  By the way, when the daily slurry landfill operation is completed, in order to prevent coal ash and the like from being fixed, it is common to carry out cleaning of the transport pipe L2. Therefore, as shown in FIG. 5, a cleaning water pipe (cleaning water supply path) 34 for supplying cleaning water and a cleaning pig from the base end side of the transport unit 30 is provided. Moreover, the structure which supplies washing water from the slurry manufacturing apparatus 1 which is a slurry supply source can also be taken.

  The floats 31 and 41 have a buoyancy that allows a device connected to the float 31 or 41 to float on the surface of the water, and plastic, metal, wooden, etc. can be used. The shape is generally a saddle type.

  The material of the anchors 32 and 43 is generally steel or concrete, but if steel or concrete cannot be used due to the regulations of the water surface landfill disposal method, the same material as the landfill material of the water surface landfill is biodegradable. Use one packed in a flexible container bag or a block made only of the material. As a result, even if the anchors 32 and / or 43 remain in the landfill site, it is possible to prevent a violation of the waste sweeping regulations.

  The wires 33 and 44 may be made of flexible resin or metal.

<The landfill method of the water surface landfill site>
Next, an example of a landfill method (hereinafter simply referred to as “landfill method”) of the water surface landfill disposal site according to the present embodiment using the landfill facility 70 described above will be described.
The landfill method of the present embodiment includes a step (first step) of installing the slurry production apparatus (transferred slurry production apparatus) 1 with the land 61 adjacent to the water surface landfill disposal site 60 as the installation place, and the slurry production apparatus 1 Operates to generate coal ash slurry (second step), transports coal ash slurry from slurry production device 1 to any landfill site of water surface landfill 60, and discharges coal ash slurry at landfill site Then, after the landfill process (third process) and landfill at the landfill site are completed, the landfill site is moved within the range where the coal ash slurry can be transported from the slurry manufacturing apparatus 1, and the new landfill site After completion of the landfilling step (fourth step) and landfilling within a range where the coal ash slurry can be transported from the slurry production apparatus 1, the operation of the slurry production apparatus 1 is stopped, and the slurry A step (fifth step) of dividing the slurry manufacturing apparatus 1 by dividing the manufacturing apparatus 1 into two or more units (aggregates) and using a land different from the current installation location as a new installation location, This is a method of repeating the second to fifth steps until the landfill of the landfill disposal site 60 is completed.
Hereinafter, each step will be described in detail.

(First step)
First, as shown in FIG. 11, an arbitrary land 61 adjacent to the water surface landfill disposal site 60 is selected as an installation location, and the slurry manufacturing apparatus (transferred slurry manufacturing apparatus) 1 shown in FIGS. 1 and 2 is installed. . Specifically, as shown in FIG. 4, the units 1 </ b> A to 1 </ b> H divided into eight pieces of the slurry manufacturing apparatus 1 are respectively transported by a truck and loaded and unloaded by a crane to assemble the units 1 </ b> A to 1 </ b> H. At that time, as shown in FIG. 3, it is preferable to adjust the level of the mechanical equipment in units of mm with the adjusting bolt 9 </ b> B.

  Next, a pipe L <b> 1 for deriving the coal ash slurry provided at the lower part of the slurry hopper 7 of the slurry production apparatus 1 is connected to the slurry pump 14. Next, the transport pipe L2 connected to the slurry pump 14 is moved to an arbitrary landfill point P1 of the water surface landfill site 60. Next, the discharge pipe L3 is extended from the connecting portion 40 so that the discharge port 51 faces the water bottom.

(Second step)
Next, the slurry manufacturing apparatus 1 is operated to generate a slurry of coal ash. Specifically, first, the wet ash and clinker ash piled up by a backhoe, an excavator car, etc. are conveyed to the material receiving hopper 6. Next, a certain amount of raw material is supplied from the material receiving hopper 6 to the loading surface of the belt conveyor 5.

  Next, the belt conveyor 5 is operated to supply a predetermined amount of raw material to the high-speed kneading mixer 4. In addition, the input amount of a raw material is measured by measuring the operation time of the belt conveyor 5 at the time of conveying a raw material. Next, moisture is supplied into the high-speed kneading mixer 4 and the high-speed kneading mixer 4 is operated to produce a coal ash slurry. A batch of coal ash slurry can be produced in about 15 seconds.

  Next, the produced coal ash slurry is transferred from the high-speed kneading mixer 4 to the slurry hopper 7 and temporarily stored. Then, the coal ash slurry is supplied to the transport pipe L <b> 2 through the slurry pump 14 from the coal ash slurry lead-out pipe L <b> 1 provided at the lower portion of the slurry hopper 7.

(Third step)
Next, the coal ash slurry is transported from the slurry manufacturing apparatus 1 to an arbitrary landfill point P1 of the water surface landfill disposal site 60, and the coal ash slurry is discharged at the landfill point P1 to perform landfill. In the discharge part 50, at the beginning of landfill, the discharge port 51 is disposed so as to face the water bottom 62 as shown in FIG. When the coal ash slurry is buried and buried in the coal ash 64 or the like in which the discharge port 51 is buried, and the discharge amount of the slurry falls below a predetermined discharge amount, the discharge port 51 is pulled up to a predetermined position. As a method for pulling up the discharge port, the length of the discharge pipe L3 is constant and the connecting part 40 is pulled up, and the method of changing the length of the discharge pipe L3 while at least part of the connecting part 40 is floated on the water surface. There is. As the latter method, as shown in FIG. 7 (B), a range in which the discharge port 51 is buried in coal ash 64 or the like that has already been reclaimed using the lifting device 42 installed in the connecting portion 40. And continue reclamation of coal ash slurry. By managing the position of the discharge port 51 in this way, it is possible to prevent the coal ash to be landfilled from diffusing into water, and the landfill density of coal ash and the like can be greatly improved.

  When the indirect connection method using the slurry receiving hopper 401 shown in FIG. 6 is adopted as the connecting portion 40, the clogging of the slurry can be detected by observing the state of the upper surface level of the slurry in the hopper 401. When the slurry supply amount is constant at a predetermined amount, when the upper surface level of the slurry of the hopper 401 rises, the discharge port 51 is lifted by the lifting device 42 so that the upper surface level of the slurry is below a certain level. adjust.

  Detection of the embedding depth of the discharge port 51 in the slurry is performed by the following method, for example. First, the distance between the connecting portion 40 and the discharge port 51 is measured from the length of the wire 422 of the lifting device 42 being unwound. The distance from the connecting portion 40 to the surface of the coal ash 64 or the like in which the discharge port 51 is buried is measured by a sounding level meter, and the distance between the connecting portion 40 and the discharge port 51 and the connection portion 40 to the discharge port 51 are measured. From the difference from the distance to the surface of the coal ash 64 or the like in which the ash is buried, the embedding depth of the outlet 51 into the coal ash or the like is calculated. In addition, when the slurry receiving hopper method is adopted, the discharge state of the landfill object from the discharge port 51 in the coal ash or the like is estimated by monitoring the upper surface level of the slurry in the hopper, and the landfill object The amount of deposition can be estimated.

(4th process)
As shown in FIG. 11, when the landfill of one landfill point P1 is completed by the above-mentioned landfill work, the discharge part 50 and the connecting part 40 are towed by a boat or the like and moved to the next landfill point P2. At that time, since the distance from the slurry manufacturing apparatus 1 to the connecting portion 40 varies, the length of the transport portion 30 (that is, the length of the transport pipe L2) is adjusted according to the distance.

  In the direct connection method, when the transport pipe L2, the connection portion 40A, or the discharge pipe L3 is clogged, a pipe purge is performed.

  When the discharge pipe L3 is clogged in the indirect connection method, the slurry thrown into the slurry receiving hopper 401 exceeds the capacity of the slurry receiving hopper 401. In preparation for such a case, it is possible to cope with the problem by providing two or more slurry receiving hoppers 401 in the connecting portion 40. That is, as shown in FIG. 10, by connecting between the plurality of slurry receiving hoppers 401 by the bypass pipe 402, the slurry receiving hopper 401 and the other slurry receiving hoppers 401 are discharged from the slurry receiving hopper 401 at the upper part of the clogged discharge pipe L3. Allow the slurry to flow through tube L3. With this configuration, even when the discharge pipe L3 is clogged, it is not necessary to stop the slurry manufacturing apparatus 1 as a slurry supply source, and the predetermined landfill can be continued in the other slurry receiving hopper 401 and the discharge pipe L3. it can.

  On the other hand, when coal ash slurry is introduced into the discharge pipe L3 from the slurry receiving hopper 401 in the indirect connection method, for example, when the cross-sectional area of the discharge pipe L3 is large, the coal ash slurry is in a state of free fall in the discharge pipe L3. It will fall to the slurry surface of the seabed vigorously. In such a case, the slurry enters 64 parts of coal ash that has already been landfilled, and seawater is mixed around the slurry surface, so that appropriate landfill is not possible. In order to avoid this, the flow rate of the coal ash slurry is controlled by reducing the cross-sectional area of the discharge pipe L3. The method for controlling the flow velocity of the slurry is not particularly limited. Specifically, the slurry flow rate in the slurry receiving hopper 401 may be sensed and mechanical control may be performed to change the tube diameter of the discharge pipe L3. In addition, when the coal ash slurry falls in the discharge pipe L3 (large flow velocity), an operation may be performed in which the flow velocity is reduced by inserting a square or the like into the discharge pipe L3.

  Further, when the daily slurry landfill operation is completed, the transport pipe L2 is cleaned. In the case of the indirect connection method shown in FIG. 6, the cleaning water is discharged from the slurry manufacturing apparatus 1 as a slurry supply source to the slurry receiving hopper 401 through the transport pipe L2. A cleaning water pipe 34 that supplies the cleaning water directly to the transport pipe L2 may be provided separately. At this time, the opening for flowing the slurry to the discharge pipe L3 below the slurry receiving hopper 401 is closed with a lid, a closing ball or the like, or the discharge port 51 is lifted by the lifting device 42, and the discharge port 51 has already been opened. By disposing it above the land surface of the landfill, water does not flow into the already discharged part. As a result, it is possible to prevent the landfill density from being lowered by flowing and diffusing the cleaning water into the landfilled slurry. When blocking with a lid or a blocking ball, a separate drainage pipe is provided to discharge the wash water into the water.

(5th process)
After the landfill point within the range in which the coal ash slurry can be conveyed from the slurry production apparatus 1 is completed, the operation of the slurry production apparatus 1 is stopped. Specifically, as shown in FIG. 11, when all the landfills in the region S3 with the length R of the transport pipe L2 as a radius are completed, the operation of the slurry manufacturing apparatus 1 is stopped.

  Next, as shown in FIG. 4, the slurry production apparatus 1 is divided into eight units 1 </ b> A to 1 </ b> H, and the slurry production apparatus 1 is relocated with a land different from the current installation location as a new installation location. For example, as shown in FIG. 12, the place S2 where the landfill of the water surface landfill disposal site 60 has already been completed can be selected as the land, and the slurry manufacturing apparatus 1 can be installed. Thereby, the landfill point P3 in the area S4 with the length R of the transport pipe L2 as a radius is newly landfilled by installing the slurry manufacturing apparatus 1 in a place near the landfill point of the water surface landfill disposal site 60. Can do.

By the way, as shown in FIG. 16, the conventional landfill facility and landfill method for a water surface landfill disposal site are roughly configured to include a large and fixed slurry production apparatus 100 and a slurry transport pipe L102, and slurry production. The coal ash slurry produced by the apparatus 100 was supplied to the landfill point by the slurry transport pipe L102, and landfilling was performed (see the landfill S1 shown in FIG. 16).
However, although some of the water surface landfill sites 60 have an area of about 800 m × 1,000 m, the slurry transport pipe L102 can be extended only by about 500 m due to restrictions on the slurry pumping capacity. Slurry landfilling was difficult at a location remote from.
Moreover, since it is necessary to prevent clogging in the slurry transport pipe L102 extended to 500 m, it is necessary to strictly control the slurry quality. Therefore, in the conventional slurry manufacturing apparatus 100, only dry ash is used as a raw material of the coal ash slurry, and wet ash and clinker ash are not targets of the coal ash slurry. Therefore, in the conventional landfill facility and landfill method of the landfill site, wet ash and clinker ash among the coal ash cannot be used for slurry landfilling. Since it had to be selected, high-density landfill could not be performed (see landfill S2 shown in FIG. 16). That is, the landfill capacity of the water surface landfill 60 could not be effectively utilized.

On the other hand, according to the landfill facility 70 and the landfill method of the present embodiment, all of the slurry production apparatus 1, the transport unit 30, the connection unit 40, and the discharge unit 50, which are slurry supply sources, are mobile facilities. Therefore, equipment can be moved according to the landfill site and landfill point, and coal ash slurry can be produced and landfilled. Furthermore, by repeating the first to fifth steps described above, the entire water surface landfill site 60 can be landfilled.
Moreover, according to the landfill facility 70 and the landfill method of this embodiment, since the slurry manufacturing apparatus 1 can be transferred to land (including the existing landfill site) close to the landfill point according to the landfill site, the transport pipe (slurry The length R of the transport pipe) L2 can be about 100 m. Thereby, since possibility that clogging of coal ash slurry will arise in transport pipe L2 is low, it is not necessary to manage slurry quality severely. That is, according to the present embodiment, when producing the coal ash slurry in the slurry production apparatus 1, it is not necessary to perform strict slurry quality control in order to prevent clogging of the piping, so that the production capacity can be increased. .
Furthermore, according to the landfill facility 70 and the landfill method of the present embodiment, the slurry production apparatus 1 can produce and supply coal ash slurry using wet ash and clinker ash as raw materials. Therefore, since wet ash and clinker ash can also be used for slurry landfilling, high-density landfilling is possible, and effective use of the capacity of the water surface landfill disposal site 60 can be sufficiently achieved.

Further, according to the landfill facility 70 and the landfill method of the present embodiment, the transport unit (horizontal transport path) that transports the coal ash slurry from the slurry manufacturing apparatus 1 serving as a slurry supply source to an arbitrary landfill point of the water surface landfill disposal site 60. 30 and a discharge part (vertical conveyance path) 50 for transferring the coal ash slurry in the vertical direction, and the opening 51 on the tip 53 side of the discharge pipe L3 from which the coal ash slurry is discharged is the bottom of the landfill point. Since it can be embedded in the coal ash 64 disposed opposite to 62 or deposited on the water bottom 62, the coal ash slurry can be prevented from diffusing into water when discharged from the opening 51. The landfill density can be increased.
Therefore, since the landfill capacity of the water surface landfill 60 can be used effectively, it is possible to extend the life of the landfill.

  Further, according to the landfill facility 70 and the landfill method of the present embodiment, the space provided between the transport pipe L2 and the discharge pipe L3 by using an indirect connection method between the transport pipe L2 and the discharge pipe L3. From this, the state of the coal ash slurry can be confirmed. Furthermore, when the slurry receiving hopper 401 is employed as the indirect connection method, there is an effect that the slurry surface can be visually confirmed. The timing when the coal ash slurry is landfilled and it becomes difficult to discharge the slurry from the discharge port 51 can be confirmed by the upper surface level of the slurry in the slurry receiving hopper 401 rising.

  Further, according to the landfill facility 70 and the landfill method of the present embodiment, when a double pipe structure is adopted as the discharge pipe L3, the inner pipe L3A and the outer pipe L3B of the double pipe can be slidable. It is possible to absorb the fluctuation of the water surface that occurs during waves and stabilize the altitude position of the discharge port 51.

  In addition, according to the landfill facility 70 and the landfill method of the present embodiment, by connecting the float 31 to the transport pipe L2 and floating the transport pipe L2 from the water bottom 62, the resistance during movement of the transport pipe L2 is reduced. It becomes possible to easily move the connecting part 40 and the discharge part 50 connected to the tip of the transport part 30 to an arbitrary position of the water surface landfill site 60.

In addition, according to the landfill facility 70 and the landfill method of the present embodiment, one of the two or more connecting portions 40 is provided and the bypass pipe 402 that connects the connecting portions 40 and 40 is provided. When the discharge pipe L3 is clogged, the coal ash slurry can flow from the slurry receiving hopper 401 above the clogged discharge pipe L3 to the other slurry receiving hopper 401 and the discharge pipe L3. With this configuration, even when one of the discharge pipes L3 is clogged, it is not necessary to stop the slurry production apparatus 1 that is a slurry supply source, and a predetermined landfill operation is continued by the other slurry receiving hopper 401 and the discharge pipe L3. can do.
Note that two transport pipes L2 and two discharge pipes L3 may be connected to one connecting portion 40. Thereby, the bypass pipe 402 can be omitted.

<Other embodiments>
Next, a landfill facility (hereinafter simply referred to as “landfill facility”) of a water surface landfill disposal site, which is another embodiment to which the present invention is applied, will be described. FIG. 13 is a side view schematically showing a configuration of a landfill facility 80 which is another embodiment to which the present invention is applied. FIG. 14 is a plan view schematically showing a configuration of a landfill facility 80 which is another embodiment to which the present invention is applied. Furthermore, FIG. 15 is an enlarged plan view showing a configuration of a unit-type water float 300 used in a landfill facility 80 according to another embodiment.

  The landfill facility 80 of the present embodiment is characterized by using a unit-type floating float 300 that can float on the water surface 63 of the water surface landfill disposal site 60 instead of the transport unit 30 of the landfill facility 70 of the above-described embodiment. . Therefore, in the landfill facility 80 of the present embodiment, the slurry production apparatus 1, which is a slurry supply source, the connecting unit 40, and the discharge unit 50 are the same as the configuration of the landfill facility 70 of the above-described embodiment, and thus the same reference numerals are used. A description thereof will be omitted.

  As shown in FIGS. 13 and 14, the transport section in the landfill facility 80 according to the present embodiment includes three water floats 300 connected by a flexible unit connection pipe (pipe unit) 303, and is subjected to water surface landfill disposal. It is comprised by providing over the water surface 63 between the arbitrary landfill points of the field 60, and the manufacturing apparatus (slurry supply source) 1. FIG.

  As shown in FIG. 15, the floating float 300 serving as a basic unit (unit unit) is a base in which a float 301 and a base 304 are connected by a connecting member 305, and a pair of transport pipes 302, 302 are formed on the base. It is fixed.

  And as shown in FIG. 14, the connection of adjacent water floats 300 and 300 connects the transport pipe 302 which one water float 300 has, and the unit connection pipe (piping unit) 303 which the other water float 300 has. It can be connected by connecting.

  As shown in FIG. 15, the unit connecting pipe 303 is preferably a flexible pipe in order to absorb the vertical and horizontal swings of the unit-type water float 300.

  The water float 300 can be held in place on the water by connecting the wire 307 to the anchor 306. The size of the float 300 is not particularly limited, but for example, a 12.65 m × 3.30 m base unit is used as a basic unit, and the size is adjusted as appropriate so that it can be easily transported on land and moved on the water. To make.

  As shown in FIGS. 13 and 14, when the distance of the water surface 63 between the slurry production apparatus 1 as a slurry supply source and the discharge unit 40 exceeds 12.65 m as described above, the surface float 300 as a basic unit. The slurry is landfilled by extending a transport distance to an arbitrary landfill site in the water surface landfill disposal site 60 by connecting a plurality of the above.

  As shown in FIG. 15, expanded metal, punching metal, or the like can be used for the pedestal 304. The connecting member 305 can be generally L-shaped steel or H-shaped steel, but is not limited thereto.

  The float 301 is not particularly limited as long as it has a buoyancy that causes the device connected to the float 301 to float on the water surface. Further, the material of the float 301 is not particularly limited. Specifically, for example, plastic, metal, wooden, or the like can be used, but plastic is generally used. The shape of the float 301 is not particularly limited, but is generally a saddle type.

  The material of the anchor 306 is not particularly limited, but steel or concrete is generally used. Here, when steel or concrete cannot be used as the anchor 306 due to regulations of the landfill site 60, the same material as the landfill material of the landfill site 60 is packed in a biodegradable flexible container bag, or only the material concerned. Use the block created in. As a result, even if the anchor 306 remains in the landfill 60, it does not violate the regulations of the waste disposal method.

  The wire 307 is not particularly limited as long as it has flexibility. As a material of the wire 307, for example, resin, metal, or the like can be used.

  As described above, according to the landfill facility 80 according to another embodiment, a plurality of unit-type water floats 300 that can float on the water surface 63 of the water surface landfill disposal site 60 are provided and connected so as to have flexibility. The plurality of floating floats 300 are provided across the water surface 63 between any landfill point of the water surface landfill disposal site 60 and the manufacturing apparatus (slurry supply source) 1. Thereby, it can walk on the water float 300 from the land 61 to arbitrary landfill points.

  Further, according to the landfill facility 80 of another embodiment, a plurality of water floats 300 are connected, a transport pipe 302 that one water float 300 has, and a unit connection pipe (piping unit) that the other water float 300 has. ) 303 is connected to form a horizontal conveyance path. Thereby, even if the landfill point is far away from the manufacturing apparatus (slurry supply source) 1, it is possible to extend by connecting a plurality of basic units having the same shape with the unit connecting pipe (pipe unit) 303 fixed to the water float 300. Therefore, the coal ash slurry can be supplied to any landfill point. In addition, by making the units of the same shape, it is possible to reduce manufacturing costs such as design costs and material procurement costs, thereby obtaining a cost reduction effect.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1. Transfer type slurry production equipment (slurry production equipment, slurry supply source)
1A ~ 1H ... unit (aggregate)
2 ... Support base 2A, 2B ... Support base member (laying iron plate)
3 ... Support frame 3A-3D ... Support frame part 4 ... High-speed kneading mixer (stirring device)
5 ... Belt conveyor (raw material conveying equipment)
6. Material receiving hopper (raw material input equipment)
7 ... Slurry hopper 8,8A, 8B ... Step 9 ... Machine level adjuster 9A ... Level adjustment base plate 9B ... Adjustment bolt 10 ... Floor (scaffold)
11 ... Fence 12 ... Raw material charging guide mechanism 13 ... Water supply mechanism 14 ... Slurry pump (slurry pressure feeding device)
30 ... Transport section (horizontal transport path)
31 ... Float 32 ... Anchor 33 ... Wire 34 ... Washing water piping (washing water supply path)
300 ... Unit-type water float 301 ... Float 302 ... Transport pipe 303 ... Unit connection pipe (pipe unit)
304 ... pedestal 305 ... connecting member 306 ... anchor 307 ... wire 40 ... connecting portion 40A ... connecting portion 41 ... float 42 ... lifting device (lifting means)
43 ... Anchor 44 ... Wire 401 ... Slurry receiving hopper 402 ... Bypass pipe 421 ... Winding device 422 ... Wire 50 ... Discharge unit (vertical conveyance path)
51 ... Discharge port (opening)
52 ... Base end 53 ... Tip 60 ... Water surface landfill disposal site 61 ... Land 62 ... Water bottom 63 ... Water surface 64 ... Coal ash 70, 80 ... Landfill facility (landfill facility) on the water surface landfill site
DESCRIPTION OF SYMBOLS 100 ... Conventional (large size, fixed type) slurry manufacturing apparatus L1 ... Pipe L2, L102 for coal ash slurry derivation | leading-out transport pipe (slurry transport pipe)
L3 ... discharge pipe L3A ... inner pipe L3B ... outer pipes P1-P3 ... landfill points S1-S4 ... area (landfill)

Claims (14)

A support base laid on the ground,
A stirrer for producing a slurry using coal ash containing at least one of dry ash, wet ash and clinker ash as a raw material;
A support frame for supporting the stirring device,
The support frame and the support base are freely selectable between fixing and releasing the fixing,
A transfer type slurry manufacturing apparatus that can be divided into two or more aggregates.   The transfer type slurry manufacturing apparatus according to claim 1, wherein the stirring device is any one of a vertical mixer, a horizontal mixer, and an inclined mixer.   The transfer type slurry manufacturing apparatus according to claim 1, wherein one or both of the support base and the support frame are configured by a plurality of members.   The transfer-type slurry manufacturing apparatus as described in any one of Claims 1 thru | or 3 further provided with the raw material conveyance installation which is provided so that attachment or detachment and conveys the said coal ash to the said stirring apparatus.   The transfer type slurry manufacturing apparatus according to any one of claims 1 to 4, further comprising a raw material charging facility provided detachably. The transfer type slurry manufacturing apparatus according to any one of claims 1 to 5, wherein the maximum contact pressure is 0.5 kgf / cm ² or less. A landfill facility for reclaiming coal ash slurry at any landfill site in a water surface landfill site,
A slurry supply source that is provided on land adjacent to the water surface landfill site and generates a slurry of coal ash;
A horizontal conveyance path connected to the slurry supply source and extending to the landfill point;
In the landfill point, a connecting portion that changes the transfer direction of the slurry transferred by the horizontal transfer path to a vertical direction,
A base end side is connected to the connecting portion, and a vertical transfer path for transferring the slurry transferred from the connecting portion in a water bottom direction,
A landfill facility for a water surface landfill disposal site using the transfer type slurry manufacturing apparatus according to any one of claims 1 to 6 as the slurry supply source.   The landfill facility of the water surface landfill site according to claim 7, wherein the land includes a place where the landfill of the water surface landfill site is completed.   The landfill facility for a water surface landfill site according to claim 7 or 8, wherein at least a part of the connecting portion is exposed on the water surface. A plurality of unit-type water floats that can float on the water surface of the water surface landfill site,
The plurality of water floats connected so as to have flexibility are provided across the water surface between an arbitrary landfill point of the water surface landfill site and the slurry supply source. Landfill facilities for water surface landfill sites as set forth in claim 1. The horizontal conveyance path is configured such that a plurality of piping units are connected so as to have flexibility,
The landfill facility for a water surface landfill site according to claim 10, wherein the piping units are respectively fixed to the water float. A landfill method in which a slurry of coal ash is landfilled at an arbitrary landfill site in a water surface landfill site,
The step of installing the transfer type slurry manufacturing apparatus according to any one of claims 1 to 6, with the land adjacent to the water surface landfill site as an installation location,
A step of operating the transfer type slurry production apparatus to produce a slurry of coal ash;
Carrying the slurry from the transfer type slurry manufacturing apparatus to an arbitrary landfill point of the water surface landfill site, discharging the slurry at the landfill point, and performing landfill;
After completion of landfill of the landfill point, moving the landfill point within a range in which the slurry can be transported from the transfer type slurry manufacturing apparatus, and performing landfill of a new landfill point,
After the landfill site within the range in which the slurry can be conveyed from the transfer type slurry manufacturing apparatus is completed, the operation of the transfer type slurry manufacturing apparatus is stopped, and two or more sets of the transfer type slurry manufacturing apparatus are assembled. While dividing it into bodies,
A landfill method for a water surface landfill site, wherein the land for land transfer different from the installation location is used as a new installation location, and the transfer type slurry manufacturing apparatus is transferred.   The landfill method of the water surface landfill site according to claim 12, wherein the land includes a place where the landfill of the water surface landfill site is completed. In the process of discharging the slurry at the landfill point and performing landfill,
The landfill method for a water surface landfill site according to claim 12 or 13, wherein the flow velocity of the slurry is controlled.

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